5 Exercises You Should Never Do

Posted on Jun 8 2017 - 4:18pm by new

4. Leg extensions

It not only looks unfriendly – it is. It increases the chance of knee problems because it increases the force across the knee cap. The machine pulls your shins back as you lower the weight. Imbalances between the quads and hamstrings develop, which can lead to numerous knee troubles. The quads are supposed to work with other muscles, not in isolation.